System of supplying electrical energy on special tariffs.



H. LANDIS.

SYSTEM OF SUPPLYING ELECTRICAL ENERGY 0N SPECIAL TARIFFS.

APPLICATION FILED JAN- 23.11912.

1,176,373. I Patented Mar. 21; 1916.

HEINRICH LANDIS, OF ZUG, SWITZERLAND.

SYSTEM OF SUPPLYING ELECTRICAL ENERGY ON SPECIAL TARIFFS.

Application filed January 23, 1912.

T 0 all whom it may. concern:

Be it known that I, HEINRICH LANDIs, a citizen of the Swiss Confederation, residing at Zug, Canton Zug, Switzerland, have invented new and useful Improvements in Systems of Supplying Electrical Energy on Special Tarifls, of which the following is a specification.

The capacity of an electrical supply station must be suflicient to meet the maximum possible demand which can be made at any time by the various classes of consumers supplied irrespective of the fact that the average load is considerably below this amount.

The object aimed at is to improve the load factor by stimulating the use of electricity throughout the twenty four hours of the day and to attain this object a considerably reduced charge for the energy consumed during the day that is, when practically-no current is used. for illuminating purposes, is made. In order to determine the units of energy consumed, during the heavy-load periods on the station in the evening and during the rest of the day, meters with one or more integrating mechanisms are used for example double tariffand multiple tariff meters. The great disadvantages of these tariff meters are, that they are expen-. sive and need attendance and very often the amount of the con'sumption of energy in certain premises hardly warrants the installation of such a costly meter.

The object of the present invention is'to simplify the means for recording the consumption of electrical energy in such a measure that the electrical supply company may install tariff meters even in premises where but small consumption occurs, for instance in private buildings, etc. This object is obtained by actuating the change-over device of the meter not by a time switch or clocle work, etc., but by a switch for turning on or turning off certain current consuming devices for instance lamps which are normally turned on during the period of the peak load of the station. The provision and the maintenance of clockworks, time switches or the like are done away with thereby the cost of supplying energy to consumers purchasing current under a tariff system is considerably reduced.

It has been proposed to use meters of the motor type having two field coils each of which being connected with certain current consuming devices. In such meters the Specification of Letters Patent.

Patented Mar. 21, 1916.

Serial No. 672,954.

energy consumed by the different devices is recorded at a predetermined rate which cannot be altered and the changing of the rate of charging the energy used is not effected by the switching onor off of certain energy consuming devices.

The new system of metering may be executed indifferent ways. The measuring instrument or meter may have an integrating mechanism and it may be for instance a continuous current, an alternating current, or three phase-meter and the integrating mechanism may be a single-, double, tripleorstep-tariif recording train or a maximum demand indicator or prepayment tariff recording train; the measuring instrument may also be without an integrating train, for instance it may be a maximum demand switch or a maximum cut-out device.

Several modes of constructions are shown in a diagrammatical way in the accompanying drawings, in which:

Figure 1 is a diagrammatic view of a meter inserted between the means and two load circuits which it is desired to meter at different rates. Fig. 2, is a view partly diagrammatic showing means for changing the metering from one rate to the other, depending upon whether or not one of the circuits is in use. Fig. 3 is a view similar to Fig. 2 but showing a modified form of changing the rateof the meter.

I11 Fig. 1 a denotes an electricity meter and b and 0 denote the current consuming devices connected with the meter in such a manner that the full amount of energy delivered is measured. Instead of providing the meter with a change over clock or a time switch as usual until now for changing the rate of'charging at predetermined hours the change-over device is controlled according to the invention by a switch for switching on or off certain energy consumers.

In the construction shown in Fig. 2, two switches d and@ are provided. lVhen the switch 6 is closed and switch cl is in the posi tion shown in full lines in Fig. 2, the circuit through the current consumer o is closed and also the circuit through the magnet 7. These two circuits can, of course, be opened by throwing the switch 6 into the position as shown in Fig. 2. When, however, the switch cl is thrown into the dotted line position, then the circuit is closed through the current consumer I) and the circuits through the current consumer o and the magnet f are opened irrespective of the position of the switch 6. Thus, if the switch e is closed, the circuit through the currentconsumer 0 and the magnet f will be completed, serving to energize the said magnet; while, if the switch (1 is thrown into dotted position, the circuit through the current consumer I) will be completed, also serving to delinergize the magnet 7. During the period when the magnet is energized, the wheel on the. rocking arm 0., which acts as an. armature for. the magnet 7", ispulled out ofi engagement, with the; lever-w andentersinto.engagement with the upper train 8. I

The change-over device may be controlled mechanically as shown in Fig. 3. The rocking change-over lever a carrying onone end a gear rests with the otherend on aswitch lever e which may be actuated; by hand. The rocking lever is held by a spring. If the switch lever e is pulled from. the position shown in'Fig. 3 in full lines into the 130- sition; shown in the same figure in; dotted lines; the: rocking lever '0 is released and its gear is, thrown into gear with the. up-v per recording train. By returning the. switch. lever to. its original position; the;

gear on the lever 12 is brought in mesh:

with the lower recording train. In eac-hcase the entire current consumed in the premises of the consumer is registered 81131181, onthe;

high or on theilow tariff. The; switch lever may be arranged inside or outside, the meter.

or at any convenient place. a

In meters-intended for use in; connection the armature spindle.

armature of the meter are not counted atall.

' In this case only current; usedfor illumination; is to; be paidaccording to theireadings; of the meter, the. other current; has. to,v be.

paid according to the bulkttarifi.

Incertain-casesit may beof advantage-to; supply, theenergyat, clifierent rates butnot to:

field, coils, are. subdivided. and the, current supplied to. the current consuming devices b and. 0. has to pass either; the: whole, field coil or only a part thereof. The'armature.

rotates at full speed when the current consumers .7) are supplied with current,it:he speed of rotation is reduced by switching; oil. the current consumersb and switching on the consumerso. There may be more thant-wo divisions of, the field: coils; This arrange: ment maybe used in connectionwith any in: duction motor meter.

Having nowparticularly described'and as:- certained, the nature of my: invention 1' clainizz 1. In a device of, the kindidescribed,,a-plu ralit-yof gear trains, a rocking; arm, and a: gear carried by said. rocking arm and nor:

'mally, meshing with one: of said trains, an

electric. switch, saidarm lying 'in-the path of movement, of said switch andbeing movable by the movement of'saidswitch to bring the;

said gear trains.

2. In a device of the class described in:

combination, a plurality of gear trains, a2 rocking arm, and a gear, CZIIIIGClby'SillClIOCli ing arm and normally meshing with one of.

said-geartrains, aload circuit and a switch therefor, means controlled by said switch; for displacing said arm; whereby the gear;

carried: thereby isbrought. into mesh with another of. said. gear trains, and Ineans'for returning said. arm. to. its,;normal' positiom,

In" testimony whereof I- afiiv hiya signature;-

HEINRICH LANDIS,

Copies of thispatentimay, be obtained forfive cents each, by addressing the Commissioner. of Patents;

Washington, D. G.

gear on the arm into mesh witlr another of, 

